Hexaaqua Ions Flashcards
What happens when Na2CO3 is added to [Fe(H2O)6]3+ ?
- [Fe(H2O)3(OH)3] formed
- brown precipitate
- bubbles of CO2 gas
What happens when concentrated HCl is added in excess to [Al(H2O)6]3+ ?
- [AlCl4]-
- colourless solution
What happens when NH3(aq) is added dropwise to [Al(H2O)6]3+ ?
- [Al(H2O)3(OH)3] formed
- white precipitate
What happens when NaOH(aq) is added in excess to [Al(H2O)6]3+ ?
- [Al(H2O)2(OH)4]- formed
- re-dissolves to give a colourless solution
What happens when concentrated HCl is added to [Fe(H2O)6]3+ ?
- [FeCl4]- formed
- yellow solution
What happens when NaOH(aq) is added in excess to [Fe(H2O)6]3+) ?
- no further reaction
- brown precipitate
What happens when NaOH(aq) is added dropwise to [Fe(H2O)6]3+) ?
- [Fe(H2O)3(OH)3] formed
- brown precipitate
What happens when concentrated HCl is added in excess to [Cu(H2O)6]2+ ?
- [CuCl4]2- formed
- green solution
What happens when Na2CO3(aq) is added in excess to [Cu(H2O)6]2+ ?
- CuCO3 formed
- blue-green precipitate
What happens when NH3(aq) is added in excess to [Cu(H2O)6]2+ ?
- [Cu(H2O)2(NH3)4]2+ formed
- deep blue solution
What happens when NH3(aq) is added dropwise to [Cu(H2O)6]2+ ?
- [Cu(H2O)4(OH)2] formed
- blue precipitate
What happens when NaOH(aq) is added in excess to [Cu(H2O)6]2+ ?
- no further reaction
- blue precipitate
- [Cu(H2O)4(OH)2]
What happens when NaOH(aq) is added dropwise to [Cu(H2O)6]2+ ?
- [Cu(H2O)4(OH)2] formed
- blue precipitate
What happens when Na2CO3(aq) is added to [Fe(H2O)6]2+ ?
- FeCO3 formed
- green precipitate
What happens when NH3(aq) is added in excess to [Fe(H2O)6]2+ ?
- no further reaction
- green precipitate
What happens when NH3(aq) is added dropwise to [Fe(H2O)6]2+ ?
- [Fe(H2O)4(OH)2] forms
- green precipitate
- (darkens on standing due to oxidation to [Fe(H2O)3(OH)3])
What happens when NaOH(aq) is added in excess to [Fe(H2O)6]2+ ?
no further reaction
- green precipitate (that darkens on standing)
What happens when NaOH(aq) is added dropwise to [Fe(H2O)6]2+) ?
- [Fe(H2O)4(OH)2] forms
- green precipitate
(darkens on standing due to oxidation to [Fe(H2O)3(OH)3])
What are [Cu(H2O)6]2+ ions like in aqueous solution?
blue solution
What are [Fe(H2O)6]2+ ions like in aqueous solution?
green solution
What happens when NaOH(aq) is added dropwise to [Al(H2O)6]3+ ?
- [Al(H2O)3(OH)3] formed
- white precipitate
What happens when concentrated HCl is added to [Fe(H2O)6]2+ ?
- [FeCl4]2- formed
- yellow solution
What happens when NH3(aq) is added in excess to [Fe(H2O)6]3+ ?
- no further reaction
- brown precipitate
What are [Fe(H2O)6]3+ ions like in aqueous solution?
pale violet solution (but appears orange due to hydrolysis to some [Fe(H2O)5(OH)]2+ ions)
